geolite 0.0.18

open source geocode solution
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use std::sync::OnceLock;

use ureq::Agent;
use ureq::tls::{TlsConfig, TlsProvider};

const USER_AGENT: &str = concat!("geolite/", env!("CARGO_PKG_VERSION"));

static AGENT: OnceLock<Agent> = OnceLock::new();

pub fn agent() -> &'static Agent {
  AGENT.get_or_init(|| {
    let tls = TlsConfig::builder()
      .provider(TlsProvider::NativeTls)
      .build();
    let config = Agent::config_builder()
      .tls_config(tls)
      .user_agent(USER_AGENT)
      .build();
    Agent::new_with_config(config)
  })
}